JSFiddle - React, Tailwind, and code Playground

by von

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<link rel="stylesheet" href="https://netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css">


<script src="https://netdna.bootstrapcdn.com/bootstrap/3.0.0/js/bootstrap.min.js"></script>
<div class="panel-group" id="accordion">
  <div class="panel panel-default">
    <div class="panel-heading">
      <h4 class="panel-title">
        <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion" href="#collapseOne" contentEditable="true">
          Collapsible Group Item #1
        </a>
      </h4>
    </div>
    <div id="collapseOne" class="panel-collapse collapse in">
      <div class="panel-body" contentEditable="true">
        Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch.
      </div>
    </div>
  </div>
  <div class="panel panel-default template">
    <div class="panel-heading">
      <h4 class="panel-title">
        <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion" href="#collapseThree">
          Collapsible Group Item #2 (template panel)
        </a>
      </h4>
    </div>
    <div id="collapseThree" class="panel-collapse collapse">
      <div class="panel-body" contentEditable="true">
        Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch.
      </div>
    </div>
  </div>
</div>
<br />
<button class="btn btn-lg btn-primary btn-add-panel">
    <i class="glyphicon glyphicon-plus"></i> Add new panel
</button>

JavaScript

var $template = $(".template");

var hash = 2;
$(".btn-add-panel").on("click", function () {
    var $newPanel = $template.clone();
    $newPanel.find(".collapse").removeClass("in");
    $newPanel.find(".accordion-toggle").attr("href",  "#" + (++hash))
             .text("Dynamic panel #" + hash);
    $newPanel.find(".panel-collapse").attr("id", hash).addClass("collapse").removeClass("in");
    $("#accordion").append($newPanel.fadeIn());
});